Finding the Fourth Proportional to 21,399.90, 32,099.92 and 5,817.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,399.90 : 32,099.92 = 5,817.52 : x
2. Step 2: Convert to fraction form
   21,399.90/32,099.92 = 5,817.52/x
3. Step 3: Cross multiply
   21,399.90x = 32,099.92 × 5,817.52
4. Step 4: Simplify right side
   21,399.90x = 186,741,926.60
5. Step 5: Solve for x
   x = 186,741,926.60/21,399.90
6. Step 6: Final answer
   x = 8,726.30